A microwave variable delay line using a membrane impregnated with liquid crystal was newly fabricated. By employing the membrane impregnated with liquid crystal to the liquid crystal layer of the delay line, the phase-shift response becomes fast independently of the liquid crystal thickness. Experimental results show that the phase-shift response time of 33 ms, which is two orders of magnitude faster than that of a conventional one, is obtained. The new delay line also exhibits a 270-degrees phase-shift and non-dispersive delay characteristics over a wide microwave-frequency range. Moreover, it is clarified that the phase-shift characteristics to a control voltage depend on a pore size of the membrane.
|ジャーナル||IEEE MTT-S International Microwave Symposium Digest|
|出版ステータス||Published - 2002 1 1|
|イベント||2002 IEEE MTT-S International Microwave Symposium Digest - Seattle, WA, United States|
継続期間: 2002 6 2 → 2002 6 7
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